Rev. 13 November 1, 2016
Page | 64ii. The main building distribution system shall include points for supply temperature (one per building),
return temperature, supply pressure, return pressure, flow into the building system, and pressure at the
hydraulically most remote point in the building.
e. Each cooling coil shall include points for valve position feedback (for Delta P valves)
and return temperature.
f. Designs that make modifications to the interface for building chilled water shall be coordinated with U of I
Chilled Water Plant.- Materials
a. For interior chilled water piping above 2 inch diameter, install either:
i. Schedule 40 ASTM A53 seamless black steel with welded or mechanically coupled joints.
ii. Type L ASTM B88 copper with wrought fittings.
b. For interior chilled water piping 2 inch diameter or less, install either:
i. Schedule 40 ASTM A53 seamless black steel with screwed or welded joints.
ii. Type L ASTM B88 copper with wrought fittings. - Chilled water pumps
a. The Design Professional shall not specify the installation of additional chilled water pumps without Owner
approval.
b. All necessary floor-mounted chilled water pumps shall be installed on concrete housekeeping pads.
c. Install a single oil-filled pressure gauge directly at the suction and discharge outlets of each pump. - Air separators
a. Clean all integral straine rs at the end of each construction project that connects to a given chilled water
grid. - Insulation and jacketing
a. Install vapor barriers on all piping i ns ulation for c hi lled w ater s ystems. - Other
a. Install m anual air vents at accessible locations
i. At the top of all risers.
ii. At all high points in the piping system.
iii. But not in patient rooms.
b. Install plate heat exchangers where higher quality chi lled water is required for protection of sens iti ve
equipment.
Heating Hot Water Pipi ng Systems- Materials
a. For interior heating hot water piping above 2 inch diameter, install either:
i. Schedule 40 ASTM A53 seamless black steel with welded joints.
ii. Type L ASTM B88 copper with wrought fittings.
b. For interior heating hot water piping 2 inch diameter or less, install e ither:
i. Schedule 40 ASTM A53 seamless black steel with screwed or welded joints.
ii. Type L ASTM B88 copper with wrought fittings.
c. Mecha nicall y coupl ed pi pi ng shall not be us ed. - Heating hot water pumps
a. All floor-mounted heating hot water pumps shall be ins talled on concrete housekeeping pa ds.
b. Install a single oil-filled pr essure gauge di rectly connected to the suction and discharge outlets of
each pump.